BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 466 53.2%
2 United States 179 20.4%
3 Netherlands 101 11.5%
4 Germany 61 7%
5 Canada 20 2.3%
6 Korea, Republic of 8 0.9%
7 Russia 8 0.9%
8 United Kingdom 6 0.7%
9 Norway 5 0.6%
10 Brazil 5 0.6%
11 Hong Kong 4 0.5%
12 India 3 0.3%
13 Singapore 3 0.3%
14 Taiwan 2 0.2%
15 Turkey 2 0.2%
16 France 2 0.2%
17 Japan 1 0.1%